Globe-valve.



A. 0-. LEVIGK.

' GLOBE VALVE. n APPLIOATIONVFILED JUN?, 1912.

Patented Sept. 9, 1913.

` the valve seat to cut off UNITED sTATEs PATENT oEEIoE.

ALBAN o. LEVICK, or PEABODY, MAssAoHiJsE'rTs, AssIGNoR or ONE-THIRD To HARRY w. HUssEY, or PEABODY, MASSACHUSETTS.

GLOBE-VALVE. l

Specification of Letters Patent.

vlamentedsept.'a,1913.

Globe-Valves, of which the following is a specieation.

'My invention relates to new and useful improvements invalves, and the primary obgect of my invention is to provide a double cut-ofi'l valve in place of the single out-off valves now in general use.

lt is 'a matter of common knowledge that in valves of the globe type-,it often becomes necessary to remove the valve bonnet and valve in order to renew lthe packingof the valve.- In order to dothis it is necessary to sluit off the flow of `water through the valve, this usually being done bv means of a. second valve located between the first and the source of water su pply. The valve supplied for this purposeis generally located in the irrain supply pipe at apoint just within the building andl the cutting ,olf of water by this valve .will thereforecut-oif the water supply to all parts of the building. By providing a globe valve of the double'cut-olf type it is possible to remove the bonnet and repair the valve without cutting-r.` oil" the'supply of water from any part of the building save that to whichthe water is supplied through the specific pipe in which the valve being repaired is located.l

It will therefore be apparent that the main object 0f my-invention is to provide a valve for distributing pipesfor water, steam or the like, which may be repaired without rshutting ofl" theow to other'portions of the distributing system.

A further object of myfinvention .is to accomplish this by providing a valve having a double faced valve seat and a cut-off valve (3o-'acting with each of the faces of the flow of water therethrough. I A further object of-fmyinvention -is to so cgnstruot and position t-he valve seat and thevalves with res tto the seat that either vailve may be operated independently of the ot er.

. open or fully closed.

, vits seat.

A .further object of my inventionis to provide a valve seat which may be employed with the usual form of valve, and an'.55f

auxiliary valve co-acting with the opposite face ofthe valve seat and movable to close the passage therethrough either when the main valve is open or closed. I

A still further object of vmy invention is y to. so; mount the auxiliary valve. upon its valve stem that it is free for movement toward and away from` the valve seat and to provide' means for yieldablyholding said valve in engagement with its seat. still further object of my invention is to provide means for limiting the movement of the auxiliary valve so that the operator can readily tell whether the valve is fully With these and other objects inview, my invention Will be more ful-ly described, illustrated in the accompanying drawings, and then specifically pointed out in the claims which are attached to and form a 7 5 -part of this application.

In the drawings: Figure '1 is a vert-ical lbngitudinal sectional view, showing the vconstruction of my double cut-oil' valve, both top plan of the valve seat; Fig. 4 is a top 8 5V plan of thel auxiliary valve removed from Fig. 5 ,is a sectional view of a slightly modifiedy form of: valve seat and auxiliary valve. f

Corresponding and ylike parts are referred to in .the following description and indicated in all-the views'of the drawings by the same reference characters.

The preferred embodiment of my invention includes a globe valve casing 104 of` the 95 usual or'any preferred type having oppo# sitely disposed, internally threaded coupling portions ll'andlQ and a central, sub-r stantially cylindrical valve chamber 13, the

open'upper end of which is normally close-d 1'00` i by a tlireadedbonnet; 14 in the customary manner. VThe valve chamber extends vertically of the casing and is centrally divided by a' ltransversely extending web 15 into a And-a 6'5 lower cliainber. 1G and an upper chamber 17. Water flowing through the valve passes through the 'portion 11 to the chamber '16 thro-ugh the upassage of al valve seatv 1 3 threaded inton an opening in the web 15 to the chai-uber.- 17 and from the chamber 17 through the portion 12 to the pipe, as clearly shown by-the arrows Fig. 1 of the drawings. 1 l

The =double faced valve seat,vwhich has been-previously designated bythe numeral 18, comprises a substantially cylindrical body portionexternally threaded for engagement through the web ot' the valve and provided at its upper-end with a laterally directed, annular vshoulder 19 for limiting l its movement through the web. Formed vso through this body member, is a waterpassage 20 which, as shown, in Fig. 2 ost the drawings, is of irregular shape, being semiannular in section at its lower end and circular in section at its upper end, the change from end to end ybeing gradual and suchv that the passage has a uniforrncross sectional .area throughout its length. By this means, the flow of water through the passage is in no way checkedand the upper face of the valve seat may be formed to coact with the customaryT form of cut-ofi' valve, while the lower taceinay be formed to co-act with my auxiliary ,cut-oit valve. The upper face of the valve sea-t is provided with an upstan'ding annular shoulder 21 surrounding the upper end of the water passage 20 and adapted to be engaged by the packing ring or .gasket .22 of the usual cut-oit valve 23 which is of standard typo circular in shape and lswivelly mounted upon a valve stem 24 which is threaded through a suitable packing box, not shown, carried by the bonnet 14 and which is provided at its free end with a hand wheel 25 by means of which the cut-ott valve 23 may he raised or lowered to open and close the upper end ot the passage through the valve seat.

The valve thus far described, with the exceptionof the peculiar form of water ,passage provided in the valve seat, islso nearly of the customary type that a further detailed description of the same is unnecessary. l

Mv invention consists chiefly in the application of an auxiliary cut-oit valve positioned and arranged for independent movement to cut off the iiow of water tothe This auxiliary valve consists valve seat.

of a circular. bodyl member 26 having a' semi-annular, concentiically positioned port or passage 27 which, in one position of the valve, registers withl the lower endl of the passage 20 through the valve seat. The

rim or portion 28 of the Valve, formed by the provision of the passage 27, serves to assist the main body of the valve in maintaining the valve in its bearing against the valve seat and is preferably reduced iii thickness, as shown, to offer less obstruction to the passage et water through the valve. when open. In order to hold the valve in proper position against the lower face of. the valve seat, I have provided the valve with a centrally formed upwardly di` rected cylindrical stud 29 which engages in insure close engagement, if desired.

. The lower face of the auxiliary valve 26 is provided with a squared socket 31 adapted to receive the squared upper end 32 ot a valve stem 33. The free end of this valve stem extends through a suitable bore 34 formed in the bottoni of the valve casing and through a packing nut 35 threaded upon a nipple 3G extending from the casing andthe free end of the stem is squared or otherwise shaped, as shown at 37 for en'- gageinent with a .wrench or other tool. The

valve stem 33 is provided intermediate its lengt-h with an encircling shoulder 38, the upper face of which is flat, while the lower face is beveled. as shown at 39 for close engagement againstl the inner. face of the bottom of the valve easing.

vent the rotation of the valve beyond its fully opened position, while the lug 42 is arranged to prevent the movement ot the valvebeyond its fully closed position/'lt The lower i y Formed iiitegrally with this shoulder 38, is a later-- ally directed lug .4.0 and-lugs 41 and 42',

will therefore be seen thatA itthe valve stein is turned as far as possible in one direction,

the valve will be fully opened, while `it turned as far as possible in the opposite direct-ion, the valve will be fully closed.

Surrounding the valve stem 33 and bearing between the upper face of the shoulder 38 and the lower tace of the auxiliary valve 2G, is a relatively strong helical spring 43v which maintains the auxiliary valve in close i engagement againstthe lower face of the valve seat and which also inaintainsthe beveledlower face 39 otv the valve stein shoulder in close vengagement against .the inner face lof the valve casing, thereby assisting` the packing nut in preventing leaking of the valve. As will be readily seen,

the provision ot this spring and thetinounting of the auxiliary valve upon its valve stem tor movement toward and away from the valve seatpermits the automatic taking up of wear between the valve and valve seat and also between the shoulderot the valve stem and the valve casmg. llloreovcr,

lwhen the auxiliary valve is closed, the lires-4 connection with the drawing, the operation of my improved double cut-ofi'1 4.valve will be readily understood. Under normal conditions, the auxiliary valve is fully opened and the flow of water through the valve4 is regulated by the main valve Q8 in the customary manner. Should the main valve become leaky through the wearing or cutting away of the packing ring 92. the auxiliary valve may be temporarily employed lin its place, the main valve being left open.v .The chief idea of` my invention however, is not to employ the auxiliary valve as a service valve in place of the main valve. but merely as an emergency valve. for closing the pas- [sage of water or other fluid through the valve during the removal and repair of the main valve. When the main valve therefore, gets out of order, the auxiliary valve may be closed and the bonnet 14 and main valve removed without .necessitating the first cutting oi of the water by another valve between the valve being; repaired and the source of supply.'t In many instances,

'it is not'only necessary to cut oii" the water between'the source of supply and the valve being repaired, but it is also vnecessary to drain the water from the pipe between t-he two valves. With this valve, the auxiliary valve absolutely cuts ofi' the flow of water lthrough the valve and this draining is unnecessary.

Althoughgreat stresshas been laid upon the use of this valve in connection with water supply systems, it will of course be understood that it may be applied with equal facility to steam distributing systems or in fact to systems of any kind in which la Huid is transmit-ted through a pipe or series of pipes.

T he valve seat and auxiliary valve shown in Fig. 5 are identical with that shown in.

the other figures withthe exception that` the lower face of the valve Seat is provided with an annular concentric groove 44 preferably V-shaped in section, while the upper face of theauxiliary valveis provided with a correspondingly positioned shoulder 45 which engages in th'e groove andassist in forming a fluid tight joint.l

Having thus described the invention, what is claimed as new is:

1. A double cut-0H valve including a valve casing, aV double faced valve seat provided with a water passage and with a cylindrical.; socket in its lower face, a cut-oil' valve co-act-ing with the upper faceofsaid valve seat, .a rotary cut-off valve colacting with the lower face ofthe valve seat and having a centrally formed stud seating in the socket of theA valve seat and also provided with a squared socket in its lower face, a val'vestem extending through thel valve casing and having a squared inner end engaging in the squared socket of the second mentioned valve, a shoulder formed upon the valve stein and bearing'againstthe inner face ofthe valve casing, a spring bearing between said shoulder and the valve, a lug extending from said shoulder, and means carried by the valve casing' and 'co-acting with said lug to limit` the 'turning of the valve stem and its valve.

2. A double cut-oli' valve including a valve casing, a double faced valve seat having an irregular water passage therethrough and a concentric annular groove in itsr lower face,

casing, a double faced valve seatprovided with a water passage and with a cylindrical socket in its'lowervface, a cut-0E valve coacting with the upper face of said valve seat, a --rotary cut-ofi .valve co-acting with the .lower face of the valve seat and having a centrally formed stud seating in the socket thereof, a valve stem detachably engaging said second valve, and means carried bythe valve stem for holding said second valve in engagement with its valve. seat.

4. A double cut-ofi valve including a valve casing, a double faced valve seat provided with a water passage and with a cylindrical socket inits lower face, a cut-off valve coacting-withthe upper face of said valve seat, a rotary cut-ofi'i/valve co-acting with the lower face of said lvalve seat and having a 'centrally formed`stud seat-ing in the socket terminal seated in the squared socket of the valve. t

5. A double cut-ofvalve including a valve `casing, a. double faced valve seat'movided with a water passage and with a cylindrical Asocket in itslower face, a cut-off valve cov acting with the upper-face of said valve seat, stem -and bearing against Jche inner face of a rotary cut-off valve (xo-acting 'with the the valve casing, and a spring bearing belower face of the valve seat and having a tween said shoulder and the valve. centrally formed stud seating in the socket In testimony whereof I-afx my signature 5 of `the valve seat and also provided with a in presence of two witnesses.

squared socket in its lower face, a valve v ALBAN 0 LEVICK [L s] stem extending through the valve casing and l having a squared innerend engaging n chey Witnesses: squared socket of the `second mentioned KENNETH J. MACCHARLES, 10 valve, a shoulder formed upon the valve GEORGE W. BoETrNER.

Copies of this patent may be obtained fo: five cents each, by addressing the Commissioner of 'Patents,

' Washington, D. C. 

